Compact integrated water chilling unit

Abstract

The utility model discloses a compact integrated water chilling unit, which relates to the technical field of refrigeration, and comprises an upper layer framework and a lower layer framework, the upper layer framework comprises a fan, a drip tray layer and a packing layer which are sequentially arranged in the same metal plate framework from top to bottom; the lower-layer framework is arranged below the upper-layer framework and comprises a cooling water tank, a cold water host and a control cabinet, the cold water host is connected with a chilled water circulation pipeline and a cooling water circulation pipeline, the chilled water circulation pipeline is connected to a user side, the drip tray layer is provided with a water distribution device, and the other end of the water distribution device penetrates through the filler layer and then is connected with the cooling water circulation pipeline; the bottom of the drip tray layer is communicated with the filler layer; the bottom of the packing layer is provided with a packing layer bottom plate and a water flow outlet, the cooling water tank is arranged below the water flow outlet, the cooling water tank is communicated with the packing layer through the filter screen cover, and the cooling water tank is further connected to the water cooling main machine through a cooling water circulation pipeline. The device is suitable for places with limited space, and land resources for construction are saved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration technology, in particular to a compact integrated water chiller. Background Art

[0002] Currently, integrated chillers on the market install the water system piping alongside the cooling tower, which occupies a large area and increases the land use required for construction. Traditional cross-flow cooling towers require an external water inlet, which creates a high head and complicated piping. Furthermore, to ensure stable and efficient compressor operation under high loads or high temperatures, additional space must be reserved for an oil cooler. Utility Model Content

[0003] The purpose of the present utility model is to overcome the shortcomings of the prior art and to provide a compact integrated chiller, in which a cooling tower is placed above the chiller and the water circulation system, and an upper and lower layer structure is adopted as an integral design, without the need to reserve a cooling tower floor space. At the same time, the water inlet of the cooling tower is internally connected, with a small head, eliminating the need for external pipe space, and can also be designed in a split manner, which is convenient for installation and transportation, and can be flexibly allocated according to actual needs. It is suitable for places with limited space and also saves construction land resources. Since a shallow water layer is left at the bottom of the packing layer, this space can be used to install a water-cooled oil cooling device, making full use of the cooling water after heat dissipation to reduce the operating temperature of the compressor lubricating oil, so that it remains within the optimal operating temperature range, thereby ensuring the normal and efficient operation of the compressor.

[0004] The purpose of the utility model is achieved through the following technical solutions: this compact integrated chiller comprises an upper structure and a lower structure, the upper structure comprises a fan, a drip tray layer and a packing layer which are sequentially arranged in the same sheet metal frame from top to bottom; the lower structure is arranged below the upper structure, and comprises a cooling water tank, a chilled water main unit and a control cabinet, the chilled water main unit is connected to a chilled water circulation pipeline and a cooling water circulation pipeline, the chilled water circulation pipeline is connected to the user side, a water distribution device is provided in the drip tray layer along the length direction for uniform water distribution, the other end of the water distribution device passes through the packing layer and is connected to the water outlet of the cooling water circulation pipeline, a plurality of drain holes are provided at the bottom of the drip tray layer to communicate with the packing layer; a packing layer bottom plate is provided at the bottom of the packing layer, and a water flow outlet is provided on the packing layer bottom plate for embedded installation of a filter screen cover, the cooling water tank is arranged below the water flow outlet, the filter screen cover connects the cooling water tank with the packing layer, and the cooling water tank is also connected to the chilled water main unit through the cooling water circulation pipeline; the fan is electrically connected and controlled by the control cabinet.

[0005] As a further technical solution, the chiller includes a compressor, a heat exchange coil is installed on the bottom plate of the packing layer through a fixed block, and the compressor is equipped with an oil circuit blocking pin to connect the oil circuit to the heat exchange coil. The heat exchange coil is immersed in the cooling water on the bottom plate of the packing layer as a water-cooled oil cooling device, so that the lubricating oil exchanges heat with the cooling water in the heat exchange coil and then flows back to the compressor.

[0006] As a further technical solution, the portion of the water distribution device extending into the drip tray layer is evenly provided with a plurality of water outlet holes in the horizontal direction, and a plurality of fans are arranged at intervals above the drip tray layer.

[0007] As a further technical solution, the cooling water tank comprises a water tank body, a water supply pipe, an overflow pipe, a drain pipe, and an access door. The water tank body is constructed by joining four sheet metal panels and a bottom sheet metal panel. The sheet metal folds face outward, and the folded seams are fully welded. The two panels are joined with butyl tape and then bolted securely. A square hole is provided on the outward-facing sheet metal surface of the water tank body for mounting the access door. The drain pipe is located at the bottom of the water tank body. The overflow pipe is set at a height corresponding to the required volume of the cooling water tank. The water supply pipe is located below the overflow pipe. Both pipes have reserved threaded connectors and are installed on the same side, leading out of the sheet metal.

[0008] As a further technical solution, the filter screen cover adopts a portable filter screen cover, including a cylindrical cover body with an open top and a handle connected to the top of the cover body. The top of the filter screen cover is embedded in a water outlet installed on the bottom plate of the packing layer, and several water distribution holes are opened on the surface of the cover body, and there are no water distribution holes on the side of the cover body facing the inspection door.

[0009] As a further technical solution, the upper structure and the lower structure are assembled in an integral manner, and both share the same sheet metal frame and base.

[0010] As a further technical solution, the upper structure and the lower structure are assembled in a split manner and stacked on site so that the top of the cooling water tank is close to the bottom plate of the filler layer. Waterproof tape is required at the joints. Channel steel is set at the bottom of the upper structure to cooperate with the crossbeam set at the top of the lower structure and fixed by bolts. At the same time, the upper and lower parts of the water pipes of the water distribution device are connected and fastened by equal-diameter straight pipes.

[0011] The beneficial effects of the utility model are:

[0012] 1. The cooling tower is placed above the chiller, chilled water circulation pipeline, and cooling water circulation pipeline. The upper and lower layers are designed as a whole, eliminating the need to reserve space for an independent cooling tower and saving construction land resources.

[0013] 2. Place the cooling water tank on the lower frame and connect it to the same side of the cooling tower water inlet and outlet. The capacity of the cooling water tank is designed according to the actual heat exchange capacity, eliminating excess water storage, saving water consumption, and ensuring the working safety and stability of the entire cross-flow cooling tower.

[0014] 3. The cooling tower is designed to be internal, eliminating the need for external pipe space, reducing head, lowering power and improving energy efficiency;

[0015] 4. Eliminate the Y-type filter and anti-vortex cover, independently design a removable filter cover, embedded installation, integrated punching, fastening and durability, dense filter holes, easily filter debris to prevent clogging, high utilization rate, and save maintenance costs;

[0016] 5. In the shallow water layer at the bottom of the packing, a built-in water-cooled oil cooling device reduces the operating temperature of the compressor, with a large heat exchange area and high energy efficiency, eliminating the need for the installation of an independent oil cooler;

[0017] 6. The cooling tower and water circulation frame can be installed separately, which is flexible and reduces transportation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model (integrated assembly).

[0019] Figure 2 This is a structural diagram of the utility model (split assembly).

[0020] Figure 3 It is a structural diagram of the filter screen cover in the present utility model.

[0021] Figure 4 It is a structural diagram of the cooling water tank in the utility model.

[0022] Figure 5 This is a schematic diagram of the assembly structure of the filler layer bottom plate and the compressor in the utility model.

[0023] Explanation of the reference numerals: fan 1, drip tray layer 2, packing layer 3, filter screen cover 4, cooling water tank 5, chiller 6, chilled water circulation pipeline 7, cooling water circulation pipeline 8, water distribution device 9, control cabinet 10, water-cooled oil cooling device 11, channel steel 12, crossbeam 13, bolt 14, equal-diameter straight-through pipe 15, compressor 111, heat exchange coil 112, fixing block 113, packing layer bottom plate 114, cover body 401, lifting beam 402, water distribution hole 403, water tank body 501, water supply pipe 502, overflow pipe 503, drain pipe 504, inspection door 505. DETAILED DESCRIPTION

[0024] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0025] Example: As shown in the attached Figures 1 to 5As shown, this compact integrated chiller includes a fan 1, a drip tray layer 2, a packing layer 3, a filter cover 4, a cooling water tank 5, a chiller 6, a chilled water circulation pipeline 7, a cooling water circulation pipeline 8, a water distribution device 9, a control cabinet 10, a water-cooled oil cooling device 11, a channel steel 12, a crossbeam 13, a bolt 14, a straight-through pipe of equal diameter 15, a compressor 111, a heat exchange coil 112, a fixing block 113, a packing layer bottom plate 114, a cover body 401, a lifting beam 402, a water distribution hole 403, a water tank body 501, a water supply pipe 502, an overflow pipe 503, a drain pipe 504 and an inspection door 505.

[0026] Reference Attachment Figure 1 The upper structure and the lower structure are assembled in an integral manner, wherein the upper structure includes a fan 1, a drip tray layer 2 and a packing layer 3, which are placed in the same sheet metal frame from top to bottom. The lower structure is arranged below the upper structure, and includes a cooling water tank 5, a chilled water main unit 6 and a control cabinet 10. The chilled water main unit 6 is connected to a chilled water circulation pipeline 7 and a cooling water circulation pipeline 8, and is connected to the user side through the chilled water circulation pipeline 7. Furthermore, a water distribution device 9 is provided in the drip tray layer 2 along the length direction (horizontal direction), and the part of the water distribution device 9 extending into the drip tray layer 2 is evenly provided with a number of water outlet holes in the horizontal direction to achieve uniform water distribution. The other end of the water distribution device 9 passes through the packing layer 3 and is connected to the outlet of the cooling water circulation pipeline 8. The water distribution device 9 adopts an internal water inlet. Several fans 1 are arranged at intervals above the drip tray layer 2, and the fans 1 are electrically connected to the control cabinet 10 for control. Several drainage holes are provided at the bottom of the drip tray layer 2 to communicate with the packing layer 3.

[0027] like Figure 1 、 5 As shown, a packing layer bottom plate 114 is provided at the bottom of the packing layer 3, and a water flow outlet is opened on the packing layer bottom plate 114, and a filter screen cover 4 is embedded in the water flow outlet. The cooling water tank 5 is provided below the water flow outlet so that the filter screen cover 4 connects the cooling water tank 5 with the packing layer 3. The cooling water tank 5 is also connected to the inlet of the cooling water circulation pipeline 8 and is connected to the condenser of the chiller 6 through a circulating water pump. Further, the chiller 6 includes a compressor 111 (and a condenser and an evaporator connected to the compressor 111). A heat exchange coil 112 is installed on the packing layer bottom plate 114 through a fixing block 113. The compressor 111 is equipped with an oil circuit blocking pin so that the oil circuit is connected to the heat exchange coil 112. The heat exchange coil 112 is immersed in the cooling water on the packing layer bottom plate 114 as a water-cooled oil cooling device 11, so that the lubricating oil exchanges heat with the cooling water in the heat exchange coil 112 and then flows back to the compressor 111, forming a lubricating oil circuit.

[0028] Reference Attachment Figure 4The cooling water tank 5 comprises a water tank body 501, a water supply pipe 502, an overflow pipe 503, a drain pipe 504, and an inspection door 505. The water tank body 501 is constructed by joining four sheet metal panels and a bottom sheet metal panel. The sheet metal folds face outward, and the gaps between the folds are fully welded. The two panels are joined with butyl tape and then bolted securely. A square hole is provided on the outward-facing sheet metal surface of the water tank body 501, and the inspection door 505 is mounted on the square hole. The drain pipe 504 is located at the bottom of the water tank body 501, and the overflow pipe 503 is set at a height corresponding to the required volume of the cooling water tank 5. The water supply pipe 502 is located below the overflow pipe 503. Both pipes have reserved threaded joints and are installed on the same side to lead out of the sheet metal.

[0029] like Figure 3 As shown, preferably, the filter screen cover 4 adopts a portable filter screen cover, including a cylindrical cover body 401 with an open top and a handle 402 connected to the top of the cover body 401, and the top of the filter screen cover 4 is embedded in the water outlet installed on the bottom plate 114 of the packing layer, and a plurality of water distribution holes 403 are opened on the surface of the cover body 401, and there are no water distribution holes 403 on the side of the cover body 401 facing the inspection door 505.

[0030] like Figure 1 As shown, the upper and lower structures are assembled as a whole, sharing the same sheet metal frame and base.

[0031] Example 2: Figure 2 As shown, the difference from Example 1 is that the upper structure and the lower structure are assembled in a split manner and stacked on site so that the top of the cooling water tank 5 is close to the bottom plate 114 of the filler layer, and waterproof tape is required at the joints. A channel steel 12 is set at the bottom of the upper structure, and the channel steel 12 is matched with the crossbeam 13 set at the top of the lower structure and is connected and fixed by bolts 14. At the same time, the upper and lower parts of the water pipes of the water distribution device 9 are inserted and fastened through the equal-diameter straight pipe 15 to complete the assembly.

[0032] The working process of this utility model:

[0033] In the case of integral arrangement, Figure 1 As shown, the fan 1, water distribution device 9, drip tray layer 2, packing layer 3, water-cooled oil cooling device 11 and filter screen cover 4 are arranged in sequence along the sheet metal frame. The fan 1 is embedded and electrically controlled by the control cabinet 10. The water distribution device 9 is internally connected, connected to the outlet of the cooling water circulation pipeline 8, vertically passing through the packing layer 3 to the drip tray layer 2. Several water outlet holes are opened below the horizontal water distribution device 9 to fall into the drip tray 2, eliminating the waves formed by the lateral force, allowing the water flow to fall steadily to the packing layer 3, and realizing balanced water distribution. The cooling water after heat dissipation falls into the bottom plate 114 of the packing layer. The bottom plate 114 of the packing layer has a water outlet that is consistent with the outer diameter of the filter screen cover 4 and is embedded.

[0034] The lower structure places the cooling water tank 5 together with the chiller 6, the chilled water circulation pipeline 7, the cooling water circulation pipeline 8, and the control cabinet 10 in a sheet metal frame. The sheet metal on the top of the cooling water tank 5 is tightly attached to the bottom plate 114 of the packing layer, and the filter screen 4 is completely placed in the cooling water tank 5. The cooling water passes through the several drain holes provided therein, filters impurities, eliminates vortices, and then falls into the cooling water tank 5 to complete further water distribution and heat dissipation. Finally, the cooling water tank 5 is connected to the water inlet of the cooling water circulation pipeline 8, and is connected to the condenser of the chiller 6 through a circulating water pump. The condenser is then connected to the water distribution device 9 through the cooling water circulation pipeline 8 to form a water circuit.

[0035] In case of split arrangement, Figure 2 As shown, they are stacked on site so that the top of the cooling water tank 5 is close to the bottom plate 114 of the filler layer, and waterproof tape is applied to the joints. Then the channel steel 12 at the bottom of the upper structure is fixed to the crossbeam 13 at the top of the lower structure by bolts 14. At the same time, the upper and lower parts of the water pipes of the water distribution device 9 are inserted and fastened through equal-diameter straight pipes 15 to complete the assembly.

[0036] This utility model utilizes a one-stop integrated design, placing the cooling water tank within the bottom channel steel. This is housed within a single frame along with the chiller, chilled water circulation system, cooling water circulation system, and control cabinet, and then connected to the same side of the cooling tower's water inlet and outlet. The chiller consists of a compressor, evaporator, condenser, throttling device, and oil return system. The evaporative cooling system comprises a packing layer, drip tray, water distribution device, and fan located above the water tank. An internal water inlet is employed, and evenly spaced outlet holes on the water distribution device eliminate waves caused by lateral forces, allowing the water to steadily fall to the packing layer for heat dissipation. The water then passes through a filter screen mounted at the cooling water tank inlet, filtering out impurities and eliminating vortices before entering the water tank. Finally, the cooling water is used to condense and evaporate the compressor, achieving water-cooled cooling, thereby achieving chilled water output on the evaporation side. Furthermore, to lower the compressor exhaust temperature and achieve higher system efficiency, a water-cooled oil cooling device is installed in the shallow water layer at the bottom of the packing layer, connected to the compressor's oil inlet and outlet, utilizing the heat transfer properties of oil and water to reduce the oil temperature. This utility model eliminates the need for a cooling tower footprint. The internal water inlet eliminates the need for external piping. A detachable filter screen is installed at the cooling water tank inlet, eliminating the need for piping filtration equipment. A water-cooled oil cooler is installed at the bottom of the packing layer, further achieving the goal of a compact, all-in-one chiller. It is suitable for locations with limited space and conserves construction land resources.

[0037] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A compact integrated chiller, characterized by: The invention comprises an upper structure and a lower structure, wherein the upper structure comprises a fan (1), a drip tray layer (2) and a packing layer (3) which are sequentially arranged in the same sheet metal frame from top to bottom; the lower structure is arranged below the upper structure, and comprises a cooling water tank (5), a chilled water main unit (6) and a control cabinet (10); the chilled water main unit (6) is connected to a chilled water circulation pipeline (7) and a cooling water circulation pipeline (8); the chilled water circulation pipeline (7) is connected to the user side; a water distribution device (9) is provided in the drip tray layer (2) along the length direction for uniform water distribution; the other end of the water distribution device (9) penetrates the packing layer ( 3) is connected to the outlet of the cooling water circulation pipeline (8), and a plurality of water holes are opened at the bottom of the drip tray layer (2) to communicate with the packing layer (3); a packing layer bottom plate (114) is set at the bottom of the packing layer (3), and a water flow outlet is opened on the packing layer bottom plate (114) for embedded installation of the filter screen cover (4); the cooling water tank (5) is set below the water flow outlet, and the filter screen cover (4) connects the cooling water tank (5) with the packing layer (3). The cooling water tank (5) is also connected to the cold water main unit (6) through the cooling water circulation pipeline (8); the fan (1) is electrically connected and controlled by the control cabinet (10).

2. The compact integrated chiller according to claim 1, characterized in that: The water chiller (6) includes a compressor (111), a heat exchange coil (112) is mounted on a packing layer bottom plate (114) via a fixing block (113), and the compressor (111) is provided with an oil circuit blocking pin, so that the oil circuit is connected to the heat exchange coil (112). The heat exchange coil (112) is immersed in cooling water on the packing layer bottom plate (114) as a water-cooled oil cooling device (11), so that the lubricating oil exchanges heat with the cooling water in the heat exchange coil (112) and then flows back to the compressor (111).

3. The compact integrated chiller according to claim 1, characterized in that: The portion of the water distribution device (9) extending into the drip tray layer (2) is evenly provided with a plurality of water outlet holes in the horizontal direction, and a plurality of fans (1) are arranged at intervals above the drip tray layer (2).

4. The compact integrated chiller according to claim 1, characterized in that: The cooling water tank (5) comprises a water tank body (501), a water supply pipe (502), an overflow pipe (503), a drain pipe (504) and an inspection door (505). The water tank body (501) is formed by splicing four sheet metals and a bottom sheet metal. A square hole is provided on the sheet metal surface facing outward on the water tank body (501) for installing the inspection door (505). The drain pipe (504) is located at the bottom of the water tank body (501). The overflow pipe (503) is set at a corresponding height according to the required volume of the cooling water tank (5). The water supply pipe (502) is located below the overflow pipe (503). Both of them have reserved threaded joints and are installed on the same side to be led out of the sheet metal.

5. The compact integrated chiller according to claim 4, characterized in that: The filter screen cover (4) is a portable filter screen cover, comprising a cylindrical cover body (401) with an open top and a handle (402) connected to the top of the cover body (401). The top of the filter screen cover (4) is embedded in a water outlet mounted on the bottom plate (114) of the packing layer. A plurality of water distribution holes (403) are provided on the surface of the cover body (401), and no water distribution holes (403) are provided on the side of the cover body (401) facing the inspection door (505).

6. The compact integrated chiller according to claim 1, characterized in that: The upper structure and the lower structure are assembled in an integral manner, and both share the same sheet metal frame and base.

7. The compact integrated chiller according to claim 1, characterized in that: The upper structure and the lower structure are assembled in a split manner and stacked on site so that the top of the cooling water tank (5) is in close contact with the bottom plate (114) of the packing layer. A channel steel (12) is provided at the bottom of the upper structure to cooperate with the crossbeam (13) provided at the top of the lower structure and is connected and fixed by bolts (14). At the same time, the upper and lower parts of the water pipe of the water distribution device (9) are connected and fastened by equal-diameter straight pipes (15).

Images